Mirador viewer

TypeError: Failed to fetch

{
  "manifest": {
    "error": "TypeError: Failed to fetch",
    "id": "https://dam.iuav.it/iuav/containers/e0Dl8Re/manifest",
    "isFetching": false
  },
  "window": {
    "collectionIndex": 0,
    "companionAreaOpen": true,
    "companionWindowIds": [
      "cw-00c74652-5a7b-411c-8eef-d9275f66aae2",
      "cw-412c1055-4de5-4cba-a5c7-6e4b6a6a6d78"
    ],
    "draggingEnabled": true,
    "highlightAllAnnotations": false,
    "id": "window-e5b0ab71-a79b-4587-904f-34cdd27414c6",
    "manifestId": "https://dam.iuav.it/iuav/containers/e0Dl8Re/manifest",
    "maximized": false,
    "rangeId": null,
    "rotation": null,
    "selectedAnnotations": {},
    "sideBarOpen": false,
    "sideBarPanel": "info",
    "thumbnailNavigationId": "cw-412c1055-4de5-4cba-a5c7-6e4b6a6a6d78"
  }
}